Heating device for bakers&#39; ovens.



PATENTED NOV. 19, 1907.

A.,ROBB. HEATING DEVICE FOR BAKERS OVENS.

APPLICATION FILED AUG. 10, 1906.

rm: NORRIS PETERS 5a., wasnmnron, 0. c.

. oven taken on line 22 of Fig. 1.

the steam storage tank 13.

UNITED STATES ARTHUR. ROBE, OF CORONA, CALIFORNIA.

HEATING DEVICE FOR BAKERS OVENS.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed August 10. 1905. Serial No. 273,690-

To all whom it may concern:

Be it known that I, ARTHUR ROBE, a citizen of the United States, residing at Corona, in the county of Riverside and State of California, have invented new and useful Imtity of steam to start the burner at the beginning of the next days work, or at any intermediate time. I accomplish this object by means of the device described herein and illustrated in the accompanying drawings in which Figure 1 is a front elevation of a bakers oven with my apparatus attached thereto. Fig. 2 is a central vertical section of the Fig. 3 is a detail plan of my steam generator. Fig. 4 is a side elevation of the burner. Fig. 5- is a longitudinal section through the burner tip.

Referring to the drawings 6 is a bakers oven of usual construction having the usual front opening or door 7. Located within the baking chamber 8 is my steam generating coil 9 which is raised slightly above the oven floor 10 and consists of a plurality of tubes 11 and bends 11. This generating coil is connected at one end to a water supply pipe 12 and the other end is connected to This storage tank is provided with a safety valve 14 and a steam gage 15, and a connection is made from this storage tank by pipe 16 to the burner tip 17 A base 18 within the baking chamber supports the steam pipe 16, which pipe is, provided with the regulating valve 19 to control the quantity of steam used. An oil supply'pipe 20 is connected to the top of the burner tip and to the oil supply tank 21.

This oil supply pipe has a regulating valve 22. The burner tip is provided with steam and oil: outlets 23 and 24 and is loosely screwed to the oil and steam pipes so that with a pair of tongs the direction of the flame within the baking chamber can be changed at the will of the operator. Pipe 12 is provided with a valve 25 to control the flow of water therethrough and below said valve said-pipe is connected by pipe 26 with the bottom of the storage tank. Pipe 16 is provided with a valve 28 to control the flow of steam to the burner.

WVhen it is desired to heat the oven valve 25 is opened and the water is permitted to fill the coils and to about three-fourths fill the steam storage tank when the Water is turned off. The generating coils are then heated in any deslred manner until a suflicient amount of steam is generated and stored in tank 13 to atomize the liquid hydrocarbon fuel; the pressure gage 15 indicating when the necessary pressure is contained in the steam storage tank. Valves 22 and 28 are then opened to supply the required amount of liquid fuel and steam and the burner is lighted. The flame from the burner is first directed against coil 9 to increase the steam pressure and afterwards directed to other parts of the oven chamber until the same is heated sufficiently hot to bake whatever is desired to be baked in the oven.

From time to time as the water in the storage tank is converted into steam and before it is entirely used out of the tank a fresh supply of water is admitted intothe tank by opening valve 25, it being the object to keep the tank from one-half to three-fourths ful of water all the time By this construction when an oven is used all day long there will be sufficient steam stored in the tank at the close of the days work to provide the necessary steam for starting up the burner the next day without re-heating the coils by independent fuel as is done in starting, and also to start the burner at any intermediate time.

Having described my invention what I claim as new and desire to secure by Letters Patent is In a bakers even, an oven proper, a tank located outside of said oven, a water coil Within the oven, water circulation pipes connecting the respective ends of the coil and.

the water tank, a valve located in one of said pipes, a water-supply pipe connected with the pi e last mentioned at a' point between I In witness that I claim the foregoing I; the Va ve and the tank, a valve in said water have hereunto subscribedmy name this 29th supply pipe, a base or holder adapted to rest day of July, 1905.

on the floor of the oven, a steam pipe sup- ARTHUR ROBE. ported thereby and connected with the tank, Witnesses: an oil supply pipe, and a burner connected EDMUND A. STRAUSE,

with said steam and oil pipes. HENRY T. HAZARD. 

